weeks unless the president and congress find another way. president obama's nomination of chuck hagel to be secretary of defense has been blocked in the senate tonight. in a rare move, republicans are filibustering to prevent a vote on hagel. congressional correspondent nancy cordes is following all of this. nancy. >> reporter: scott, hagel's nomination is not dead, but this does mean the democrats cannot move forward with a vote to confirm him right now. they can try again after that week-long recess that wyatt just mentioned, and republicans have signaled that they might step out of the way then, but there's no guarantee. >> pelley: cabinet nominations have only been stopped with filibusters three times in our history. why did the republicans take this step? >> reporter: well, some of them feel that this vote is being rushed, that they still have questions about hagel's suitability to be secretary of defense, while others think blocking this vote is their best leverage to try to get more information out of the white house about the benghazi attacks last september. democrats call it